🇺🇸 Waipahu is a former sugarcane plantation town and now place located in the ʻEwa District on the island of Oʻahu in the City & County of Honolulu, Hawaiʻi, United States. The U.S. postal code for Waipahu is 96797.
Waipahu has a population of over 38,216 people. Waipahu also forms part of the wider Honolulu County which has a population of over 1,016,508 people. Waipahu is situated 23 km north-west of Honolulu.